Re: Any tips on how to track down why Cassandra won't cluster?

Thanks everyone. The issue was a missing firewall entry in the security groups that prevented Cassandra from clustering. So Alain, initially I was using the private IP. I went to irc and someone had mentioned to use the public IP, although I wasnt doing multi region clustering. I should at some

Re: Any tips on how to track down why Cassandra won't cluster?

Hi Richard, I think you just can't use EC2Snitch with public IPs. See https://docs.datastax.com/en/cassandra/2.0/cassandra/architecture/architectureSnitchEC2_t.html Precisely "Because private IPs are used, this snitch does not work across multiple regions" 54.*.*.* looks like a public one.

Re: Any tips on how to track down why Cassandra won't cluster?

Along the lines of what Ben and Bryan suggested, what are you using to verify ports are open? If you do something like: node1$ nc -zv node2 9042 node2$ nc -zv node1 9042 does it succeed from both nodes? Does the first node 'know' that it is a seed? i.e. do you have first node listed in its own

Re: Any tips on how to track down why Cassandra won't cluster?

> On Wed, 3 Feb 2016 at 11:49 Richard L. Burton III > wrote: > >> >> Any suggestions on how to track down what might trigger this problem? I'm >> not receiving any exceptions. >> > You're not getting "Unable to gossip with any seeds" on the second node? What does nodetool

Any tips on how to track down why Cassandra won't cluster?

I'm deploying 2 nodes at the moment using cassandra-dse on Amazon. I configured it to use EC2Snitch and configured rackdc to use us-east with rack "1". The second node points to the first node as the seed e.g., "seeds": ["54.*.*.*"] and all of the ports are open. Any suggestions on how to track

Re: Any tips on how to track down why Cassandra won't cluster?

Check network connectivity. If you are using public addresses as the broadcast, make sure you can telnet from one node to the other nodes public address using the internode port. Last time I looked into something like this, for some reason if you only add a security group id to the allowed